R32 A/c Gas Leak

[ebola]

Hi all...

Just got back to Australia from the UK, and had the air conditioning on for more than 2 minutes for the first time yesterday.

Got to my destination & popped the hood (doing an oil change), and hisssssss..... from the left hand side of the engine bay... behind the compressor, I think.

Suspect # 1: A/C gas leak.

Several hours later, not more noise... no more A/C.

Does anyone have any idea how much it will cost to have the leak found & fixed? Its a gts4, so I have even less room than the gtst fellas.

The only contributing factor I can think of is that the compressor has developed a nasty knock (I suspect from when the car had an off strong enough to bend the LHS suspension)

Thanks.

--ebola